EP1144154B1 - Vorrichtung und verfahren zum entfernen von spänen aus einer werkzeugmaschine - Google Patents

Vorrichtung und verfahren zum entfernen von spänen aus einer werkzeugmaschine Download PDF

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Publication number
EP1144154B1
EP1144154B1 EP99920919A EP99920919A EP1144154B1 EP 1144154 B1 EP1144154 B1 EP 1144154B1 EP 99920919 A EP99920919 A EP 99920919A EP 99920919 A EP99920919 A EP 99920919A EP 1144154 B1 EP1144154 B1 EP 1144154B1
Authority
EP
European Patent Office
Prior art keywords
cuttings
machine tool
machining
mobile element
walls
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99920919A
Other languages
English (en)
French (fr)
Other versions
EP1144154A2 (de
EP1144154A3 (de
Inventor
Claude Fioroni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault Automation Comau SA
Original Assignee
Renault Automation Comau SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renault Automation Comau SA filed Critical Renault Automation Comau SA
Publication of EP1144154A2 publication Critical patent/EP1144154A2/de
Publication of EP1144154A3 publication Critical patent/EP1144154A3/de
Application granted granted Critical
Publication of EP1144154B1 publication Critical patent/EP1144154B1/de
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips

Definitions

  • the present invention relates to the field of machine tools and in particular adaptations allowing optimal chip evacuation during machining of a workpiece by one or more cutting tools of a machine tool machining.
  • the chips created during machining of a part by the tool or tools of a machine tool machining are evacuated from the machining area of said machine tool using directional liquid jets from judiciously oriented nozzles and arranged at proximity of the tool or tool holder so that drive the shavings produced to an exhaust casing which, arranged in the lower part of the area machine tool, collects chips with the liquid.
  • the use of such jets directional even judiciously arranged does not prevent the accumulation of chips in the form of agglomerate in the multiple projection areas not sprayed by liquid jets.
  • These agglomerates are particularly important when machining materials at high speed such as aluminum-based materials for which shavings, of small sizes, are projected throughout the space surrounding the tool and the workpiece.
  • the hardened chipboard bonded to the walls surrounding then come off randomly and disrupt the machining of the part in progress, requiring stopping and cleaning the machine tool.
  • the object of the present invention is to provide a chip evacuation device not requiring the use of liquid.
  • Another disadvantage of stopping the use of cutting and / or discharge liquid outside of the quasi inability to evacuate the chips lies in the heating of the machining station and therefore of the frame of the machine tool bringing additional parameters in the quality of the machining carried out by the machine tool.
  • the Applicant has advantageously oriented its research in order to exploit this principle of transporter in a new field, namely that of machine tools and in a new application namely the evacuation of shavings.
  • the chip evacuation device projected by the machining head of a machine tool, inside a delimited machining area, when machining a part by the tool or tools of a machine tool, said machining area including in its lower part a chip evacuation case, is remarkable in this that it is constituted by a mobile element which, taking up the slopes and shapes of said exhaust casing to direct the chips projected onto it and interposed between it last and said machining head, is associated with the casing evacuation by means of an elastic type connection of so as to ensure on the one hand by its insulation thermal between the machining station and the frame of said machine tool and secondly by its movement prevent parking by adhesion of chips on its slopes and removes said chips.
  • An elastic type bond has the advantage allow small movements due to vibrations but also to accept these movements. Indeed, any other type of kinematic link would hardly accept the vibration of its elements.
  • Another advantage of vibrating an element of a machine tool is that adding a quasi-independent element constitutes a thermal insulator between the cutting area and the machine frame. This thermal insulation function is welcome given that the dry cutting or machining processes are heat generators.
  • the device is remarkable in that said movable element is associated with at least one a vibrator imparting a vibratory movement to said audit element movable relative to the evacuation casing shavings.
  • vibration is particularly advantageous in that it does not require large spaces to allow movement of the movable element.
  • Printing a constant vibration at the movable element, during machining, allows, from the contact of a chip on the vibrating walls of the element mobile to route it along the slope towards the chip evacuation casing located below.
  • This chip evacuation device projected by the machining head of a machine tool does not constitute simply an invention of using a means already known in an equivalent application without modify the function.
  • the function of the device of the invention is to interpose a moving element in the chip projection source and the evacuation area itself. This function responds to a new need to know the evacuation of the chips in the absence of projection of evacuation liquid.
  • This device Another specific function of this device is its role as a particularly important thermal insulator in a machine tool carrying out machining requiring very high precision.
  • the invention also relates to the working method of such a device which, according to a first choice particularly judicious technology, consists in ensure, by vibration, the upward movement of chips on the walls 110 of the movable element 100.
  • the working process of the device chip evacuation of the invention consists in ensure, by vibration, the downward movement of chips on the walls of the moving element.
  • This last choice goes against the latest designs put in works for chip evacuation in that the improper use of gravity for evacuation to dry or associated with liquid streams of the shavings, have brought machine tool designers to create frames having a lower part comprising a device chip evacuation.
  • This particularly process new and inventive therefore allows, by freeing oneself from the constraint, by means of vibration, of an evacuation in lower zone compared to the machining zone, consider an upward evacuation of the shavings or less in a horizontal plane.
  • the device referenced D as a whole, consists of a assembly 100 of mechanically welded sheets constituting a mobile element which resumes substantially with its forms the inner shape of the exhaust housing or of the part of the frame B intended for this function of a M machine tool illustrated on the drawing of the figure 2.
  • This assembly of sheets 100 includes an opening upper 110 as well as a lower opening 120, the chips projected by the tool, not shown, on the machine tool M falling through the upper opening 110.
  • the lower opening 120 is of smaller dimensions than the upper opening 110 of so as to create a choke.
  • the movable element 100 takes the form of a hopper open upwards to communicate with the area machining and down to open into the housing discharge.
  • This hopper 100 takes the forms of the frame B to which it adapts, with the difference that these last form inverted slopes or "V" to better orient the projected chips.
  • sheet metal assembly includes elastic supports 200 which have the function of ensuring the connection between the frame B and the hopper 100. This link must authorize the vibration movement which is here achieved by means of a vibrator 300 integral with the assembly of sheets 100.
  • Elastic supports 200 dampen vibration while allowing it and isolating the hopper from the rest of the frame B.
  • the clearance present between the hopper 100 and the frame B not only has the function of authorizing movement oscillatory of the hopper 100 with respect to the frame B but also to make the hopper 100 of said frame B independent and thus creating thermal insulation.
  • the links existing between the frame B and the hopper 100 are constituted by the elastic supports only 200 and the air present between frame B and the hopper 100 participates in this thermal insulation.
  • Chips thrown onto the walls of the hopper 100 are therefore vibrated preventing them from adhering to said walls in particular those with slopes and "V" reversed. Said vibrating walls orient the flow of chips to the storage area provided for this effect in the frame of the machine tool M.
  • FIG. 3 illustrates another embodiment of the chip evacuation device D installed on a machine tool M '.
  • This machine tool M has a structure symmetrical adopting, arranged on the same horizontal plane, two workstations ST1 and ST2 on which are installed the workpieces, and a P machining station comprising at least one rotary tool which, mounted mobile in translation parallel to its axis of rotation as well as perpendicular to it, ensures the machining of parts on the two workstations ST1 and ST2.
  • each workstation ST1 and ST2 is arranged a hopper 100, or at least the opening upper 110 of a hopper 100, forming the device chip evacuation D, and which, by a set of sheets oriented, send the chips projected by the station machining P to the vertical discharge troughs 400.
  • the guides of the machine station P of the machine tool M ' are protected by horizontal telescopic covers T which, by their roof shape and their central position orient the shavings thrown towards the evacuation devices D arranged under each workstation ST1 and ST2. Also, since the central part of the machine tool is occupied by the kinematics ensuring the setting in motion of the machining station P, the opening 110 of said hoppers 100 opens more to the outside of the machine tool M ' only on the inside.
  • Each hopper 100 is advantageously equipped with a vibrator 300 ensuring vibration 100 hoppers and therefore chips projected onto the walls of said hoppers 100.
  • connection between the hopper 100 orienting the chips and the frame B 'of this machine tool M ' is provided by elastic supports 200.
  • the outer walls of the hopper 100 adjusts with play on the interior walls of the frame B 'of the machine tool M' on which the evacuation device D is installed, to allow its vibration movement.
  • the frames B and B 'of the machine tools M and M' are arranged in such a way as to give outside access to vibrators 200 through a window in the walls of said frames B and B '.
  • a window facilitates access and the supply of the vibrator 200.
  • machining area comprising movable elements vibration on all its walls that these are vertical, horizontal or inclined.
  • the working process of routing upwards the chips projected onto the movable element could be implemented by a remarkable device in that said movable member takes the form of a ramp carrying on its walls in an ascending slope the chips from the machining area to at least one chute outlet located higher than the area machining.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Turning (AREA)
  • Drilling And Boring (AREA)
  • Machine Tool Units (AREA)

Claims (8)

  1. Vorrichtung (D) zur Abfuhr von Spänen die im Inneren eines begrenzten Bearbeitungsbereichs bei der Bearbeitung eines Werkstücks durch den Bearbeitungskopf einer spanabtragenden Werkzeugmaschine (M,M') erzeugt werden, wobei der Bearbeitungsbereich in seinem unteren Abschnitt einen Abfuhrbehälter für die Späne aufweist, dadurch gekennzeichnet, dass sie aus einem beweglichen Bauteil (100) besteht, das an die Schrägen und Formen des Abfuhrbehälters angepasst ist um die oberhalb erzeugten Späne zu ihm zu fördern, das zwischen dem letzteren und dem Bearbeitungskopf eingesetzt ist und das mit dem Abfuhrbehälter über eine elastische Verbindung derart verbunden ist, dass einerseits durch sein Vorhandensein eine thermische Isolierung zwischen der Bearbeitungsstation und dem Gestell der Werkzeugmaschine gewährleistet ist und dass andererseits durch seine Bewegung ein Stillstand durch die Anhaftung von Spänen an seinen Wänden verhindert wird und diese abgeführt werden.
  2. Vorrichtung (D) nach Anspruch 1, dadurch gekennzeichnet, dass das bewegliche Bauteil (100) wenigstens einem Schwingungserzeuger (300) zugeordnet ist, der das bewegliche Bauteil in Schwingungen versetzt relativ zum Abfuhrbehälter für die Späne, derart, dass den auf das bewegliche Bauteil (100) auftreffenden Spänen die Schwingungen übertragen werden und diese an den Wänden (110) des letzteren entlang gleiten.
  3. Vorrichtung (D) nach Anspruch 1, dadurch gekennzeichnet, dass das bewegliche Bauteil (100) mit Spiel zum Abfuhrbehälter ausgerichtet ist, wobei das Spiel derart bemessen ist, dass die elastischen Verbindungen (200) zwischen den oberen Wänden des Abfuhrbehälters und den unteren Wänden des beweglichen Bauteils (100) eingesetzt werden können und die Schwingungsbewegung des letzteren ermöglicht wird.
  4. Vorrichtung (D) nach Ansprüchen 1 bis 3 in ihrer Gesamtheit, dadurch gekennzeichnet, dass das bewegliche Bauteil (100) die Gestalt eines Trichters aufweist, der nach oben offen ist um mit dem Bearbeitungsbereich in Verbindung zu stehen und der nach unten offen ist um in den Abfuhrbehälter münden zu können.
  5. Vorrichtung (D) nach Ansprüchen 1 bis 3 in ihrer Gesamtheit, dadurch gekennzeichnet, dass das bewegliche Bauteil (100) die Gestalt einer Rampe aufweist, die die im Bearbeitungsbereich erzeugten Späne entlang ihrer schräg ansteigenden Wände zu mindestens einer Abfuhrschurre fördert, die an einer Stelle angeordnet ist, die höher liegt als der Bearbeitungsbereich.
  6. Arbeitsverfahren für die Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass es darin besteht, durch Schwingungen die Förderung der Späne entlang der Wände (110) des beweglichen Bauteils (100) nach oben zu gewährleisten.
  7. Arbeitsverfahren für die Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass es darin besteht, durch Schwingungen die Förderung der Späne entlang der Wände (110) des beweglichen Bauteils (100) nach unten zu gewährleisten.
  8. Werkzeugmaschine mit einer Vorrichtung nach der Gesamtheit der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Gestell der letzteren derart ausgestaltet ist, dass ein Zugang von aussen zu den Schwingungserzeugern durch ein Fenster hindurch ermöglicht wird, das in die Wände des Gestells eingearbeitet ist.
EP99920919A 1998-05-27 1999-05-26 Vorrichtung und verfahren zum entfernen von spänen aus einer werkzeugmaschine Expired - Lifetime EP1144154B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9806667A FR2779081B1 (fr) 1998-05-27 1998-05-27 Procede d'evacuation de copeaux projetes par la tete d'usinage d'une machine-outil et dispositif permettant de le mettre en oeuvre
FR9806667 1998-05-27
PCT/FR1999/001227 WO1999061201A2 (fr) 1998-05-27 1999-05-26 Dispositif et procede pour evacuer des copeaux en dehors d'une machine-outil

Publications (3)

Publication Number Publication Date
EP1144154A2 EP1144154A2 (de) 2001-10-17
EP1144154A3 EP1144154A3 (de) 2002-09-11
EP1144154B1 true EP1144154B1 (de) 2002-11-20

Family

ID=9526756

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Application Number Title Priority Date Filing Date
EP99920919A Expired - Lifetime EP1144154B1 (de) 1998-05-27 1999-05-26 Vorrichtung und verfahren zum entfernen von spänen aus einer werkzeugmaschine

Country Status (8)

Country Link
EP (1) EP1144154B1 (de)
JP (1) JP2002542045A (de)
AU (1) AU3831799A (de)
DE (1) DE69904082T2 (de)
ES (1) ES2188165T3 (de)
FR (1) FR2779081B1 (de)
PT (1) PT1144154E (de)
WO (1) WO1999061201A2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3739300B2 (ja) 2001-05-02 2006-01-25 株式会社牧野フライス製作所 工作機械
KR102324555B1 (ko) * 2017-03-21 2021-11-10 두산공작기계 주식회사 공작 기계의 베드 및 이를 포함하는 베드 조립체

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5542789A (en) * 1978-09-22 1980-03-26 Hitachi Plant Eng & Constr Co Ltd Cutting chips eliminating device
CH640752A5 (de) * 1979-08-27 1984-01-31 Meyer Josef Ag Emmen Walzenbrecher, insbesondere fuer tongestein, und verfahren zu seinem betrieb.
US4955770A (en) * 1988-08-31 1990-09-11 Kitamura Machinery Co., Ltd. Bed for a machine tool
JPH06107315A (ja) * 1992-09-29 1994-04-19 Matsuura Kikai Seisakusho:Kk コンベア

Also Published As

Publication number Publication date
JP2002542045A (ja) 2002-12-10
PT1144154E (pt) 2003-03-31
WO1999061201A3 (fr) 2002-06-20
FR2779081B1 (fr) 2000-08-11
WO1999061201A2 (fr) 1999-12-02
FR2779081A1 (fr) 1999-12-03
EP1144154A2 (de) 2001-10-17
EP1144154A3 (de) 2002-09-11
ES2188165T3 (es) 2003-06-16
DE69904082D1 (de) 2003-01-02
AU3831799A (en) 1999-12-13
DE69904082T2 (de) 2003-10-09

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